Loose-leaf-book binder.



A. S. HARN.

LOOSE LEAP BOOK BINDER. APPLICATION FILED DEO.13,1906.

911,977, Patented Feb. 9, 1909.

'K'K Q umunumw WITNESSES: IN VENTOR.

/7- All) art S.He.rn.

ATTORNEY.

ALBERT s. HARN', OF BLOOMINGTON, INDIANA.

LOOSE-LEAF-IBOOK BINDER.

Specification of Letters Patent.

Application filed December 13, 1906. Serial 110.347,.

To all whom it may concern: Be it known that I, ALBERT S. HAHN, of Bloomington, county of Monroe, and State of Indiana, have invented a certain new and useful Loose-Leaf-Book Binder; and I do hereby declare that the following is a full, clear, and exact description thereof, refer ence being had to the accompanying drawings, in which like letters refer to like parts.-

The object of this invention is to improve loose leaf book binders. 7

To that end the chief feature of this inventionconsists in providing stiff flexible posts for binding the leaves. These posts are stiff enough to be insertible through the holes. of

a number of leaves and be forced in a curved line out of one side of the binder. They are flexible enough to curve in passing out of or into the side of the binder in which the same are mounted. In other words, in such side member of the binder the flexible posts extend longitudinally of the binder for a distance andthen are turned outwardly through a hole and thence are projected. at a right angle tothe binder so as to be insertible through the sheets of paper to be bound.

The nature of the invention will be understood from the accompanying drawing and nal section through a book provided with my binder showing the arts in osition after the arts of the binder are first put in place on t e leaves. Fig. 5 is the same with the binder tightened.

In detail 10 represents the loose leaves of a book that are each provided with' a pair of holes, as is customary withleaves for loose leaf binders.

The binder consists primarily of two binding members 11 and 12. As shown these two members extend longitudinally of the book and are hollow, being formed preferably of a single sheet of brass or other metal folded over into an oval form in cross-sectionsubstantially as shown in Fig. 3. The thickness of the binding member, or rather the width of the space within it, may be varied-to suit the size of the parts to be mounted therein.

The binding member 11 has mounted in it flexible stifi binding posts 13, which are made e 3-3 of Fig. 2. Fig. dis a longitudi- Patented Feb. 9,1909. I

preferably of wire like a cable; This is so made as to be quite stifi, so that thehead 14 on the outer end of the post may be readily insertible through the holes of a large num- In fact it should be ber of leaves at once. only flexible enough to bend as it passes through the hole 15 in the binding member 11, for the portion outside of said hole must extend substantially at a rightangle from said binding member, while the portion within the binding member extends longitudinally of and parallel with said binding memher, and at its inner end is attached to the movable block 16 that is provided with a threaded hole and is mounted on a screw rod 17. This screwrod at each end has bea s w movable key 20, the rod will move the block 16 in opposite directions. The other binding member -12 has in it slots 21 cut through the rear edge thereof, the portion of said slot in. the rear edge and in the inner surface ad j acent the leaves is narrow, and the end of the slot in the outer surface of said binding member is enlarged, substantially as a in Fig. 1. The enlarged ortion of sa1 slot 21 is large enough for t einsertion of the head 14 of the post, and the narrow portion of said slot is large'eno h for the insertion of the narrow portion of t e post, but itis too narrow to permit the passage through it of the head 14.

The device is used as follows: After the leaves 10 have been duly. punched, the threaded rod 17 is operated so as to move the blocks 16' away from each other and thus push .the outer ends of the osts 13 outward.

ears

member 12 isputinplac'e. upon the leavm and on the outer ends of the posts. This latter step is accomplished by merely sliding the member 12- rearward until the posts enter the slots 21, as shown in Fig. 4, and the heads 14 extend over the enlarged ends of said slots 21. Then the threaded rod 17 is operated ina direction the reverse of that V mentioned above so as to draw the blocks 16 toward each other and draw in and down 7 said posts 13 until the heads 14 of the osts T member 12, as shown in F igQ 3, and until said posts are drawn down tightly enough to bind the leaves between the two binding posts, as appears in Fig. ,5. The key 20 is then re moved.

- It is thus seen that a very simply constructed loose leaf binding is provided, as

there are only the two binding members with the stiff flexible posts that are drawn into or pushed out of one of said members. The

i inder is adjustable from one to any number of, leaves, as the two members can be drawn absolutely against eachother and at no time will the posts project, but will always be out of the way, as shown in Fig. 5. There are other advantages which Wlll occur to any person experienced in loose-leaf book bind- What I claim as my invention and desire to secure by Letters latent is:

'1. A loose leaf book-binder having two binding members between which perforated sheets of paper are-adapted to be bound, said binding members having a casing to form a chamber and holes in the side of said casing adjacent the sheets of paper when in place and registering with the perforations in the paper, stiff flexible posts mounted in said casing and projecting through said holes and the same therefrom, substantially as set forth.

' 2. A loose-leaf book-binder having bind ing members, flexible posts withheads on the ends thereof for connecting said members, and means mounted in connection-with one binding member for lengthening and shortbeing hollow and slotted through the rear edge thereof to receive said flexible posts,

said slots being widened in the outer surface of said binding member to admit the heads on said flexible posts and narrow enough in the inner surface of said binding member to prevent the passage through themof the heads of said flexi bleposts, substantially as set forth. In Witness whereof, I have hereunto aflixed my signature in the presence of the witnesses herein named.

ALBERT S. HAHN. Witnesses:

THEODORE J. LOUDEN, SAMUEL W, COLLINS.

ening said posts, the other binding member 

